package cn.tansanqinger.utils;

import java.io.InputStream;

import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;

public class MyBatisUtils {
	private static SqlSessionFactory sqlSessionFactory;
	static {
		try {
			//使用MyBatis第一步：获取sqlSessionFactory对象
			String resource = "mybatis-confg.xml";
			InputStream inputStream = Resources.getResourceAsStream(resource);
			sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
		} catch (Exception e) {}
		
	}
	//既然有了SqlSessionFactory，顾名思义，我们可以从中获取SqlSession的实例了。
	//SqlSession完全包含了面向数据库执行SQL命令所需的所有方法
	public static SqlSession getSqlSession() {
		return sqlSessionFactory.openSession();
	}
}
